329520385 has 8 divisors (see below), whose sum is σ = 395606376. Its totient is φ = 263495040.

The previous prime is 329520377. The next prime is 329520397. The reversal of 329520385 is 583025923.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 329495104 = 159^2 + 18152^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 329520385 - 2³ = 329520377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2196 + ... + 25765.

It is an arithmetic number, because the mean of its divisors is an integer number (49450797).

Almost surely, 2^329520385 is an apocalyptic number.

It is an amenable number.

329520385 is a deficient number, since it is larger than the sum of its proper divisors (66085991).

329520385 is a wasteful number, since it uses less digits than its factorization.

329520385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30323.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 329520385 is about 18152.6963561891. The cubic root of 329520385 is about 690.7073785970.

The spelling of 329520385 in words is "three hundred twenty-nine million, five hundred twenty thousand, three hundred eighty-five".